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103839 Posts in 12195 Topics by 4704 Members
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Author Topic: COPO  (Read 3708 times)
tmodel66
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« Reply #15 on: September 21, 2010, 09:30:36 AM »

COPO was also used to get a Camaro built with a non-standard (non-RPO) option.
An example is in 1968 4:56 rear gear was a RPO G82 in 1969 you had to get 4:56 gears using COPO 9511
I find this last statement about '69 very interesting. I took my rearend apart to rebuild it and found 456 gears in it. They are GM gears stamped  6/69 and my car was built first week of July. My POP says my gears should be 331. The car is a L48. Could these be COPO gears or what happened?
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Daniel  
'69 SS 350/4 speed  Fathom Green--POP
tom
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« Reply #16 on: September 21, 2010, 06:50:14 PM »

If it was ordered that way, the POP should show it. Possibly someone swapped an axle. Check the axle code on the front of the passenger side tube. I know I swapped a couple of boneyard axles back in the day. Fast cheap way to get a posi, or to fix a blown rear.
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69 X11 Z21 L14 glide
looking for a 69 export model (KPH) speedo
JoeC
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« Reply #17 on: September 22, 2010, 12:51:36 AM »

Some gears were dealer installed. I had a 1970 SS396 Nova with original dealer new car paperwork showing they installed 4:10 gears
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KurtS
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« Reply #18 on: September 22, 2010, 02:02:41 AM »

IIRC, Nova's had very limited gear choices. Hence the dealer install.
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Kurt S
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tmodel66
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« Reply #19 on: September 22, 2010, 09:34:17 AM »

It's a numbers matching car so the rear end is the correct one for the car. I guess I'll have to go with dealer install. The only original paper work I have is the POP and owner's manual.
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Daniel  
'69 SS 350/4 speed  Fathom Green--POP
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